Before buying a tree, it is important to look beyond how attractive it looks. Not every tree is a good choice for a residential landscape.
Some trees grow much larger than expected, develop aggressive roots, drop large amounts of fruit or branches, attract pests, or spread aggressively beyond where they were planted. Others may simply be poorly suited to a small yard or to the local climate.
Here are 12 trees I would think twice about planting in my yard and why.
Silver Maple
Silver maple is popular because it grows quickly and provides plenty of shade. Unfortunately, its rapid growth can also create problems for homeowners.
The tree can develop a large, spreading root system that may interfere with lawns, sidewalks, drainage systems, and other nearby structures. Its fast-growing wood can also be relatively weak, making branches more susceptible to breaking during storms.
Silver maples eventually become large trees, so they can overwhelm a small residential yard. Their fast growth may seem appealing when you want shade quickly, but it can mean more pruning and maintenance later.
Why think twice:
- Aggressive roots can cause landscaping problems.
- Branches can be prone to storm damage.
- Mature trees require considerable space.
- Regular pruning may be necessary.
Bradford Pear
Bradford pear became popular because of its attractive shape and masses of white flowers in spring. However, its beautiful appearance can hide a significant structural weakness.
The tree tends to develop multiple branches with narrow angles where they join the trunk. As the tree matures, these branches can become weak and split, particularly during strong winds, heavy rain, or ice storms.
In some areas, related ornamental pear trees can also spread beyond gardens and become invasive. The flowers may additionally have an unpleasant smell.
Why think twice:
- Weak branch structure can lead to splitting.
- Storm damage can become a recurring problem.
- Some populations can spread aggressively.
- Flowers may have an unpleasant odor.
Weeping Willow
Few trees are as recognizable as the weeping willow, with its long branches cascading toward the ground. It can create a beautiful focal point beside water or in a spacious landscape.
The problem is that willow roots strongly seek moisture. This can make the tree a poor choice near underground water lines, drainage systems, septic systems, or other structures where roots could become troublesome.
Weeping willows also need considerable space and adequate moisture. Their branches can be vulnerable to damage, and the tree may require regular maintenance.
Why think twice:
- Extensive roots seek out moisture.
- It can cause problems when planted near pipes or septic systems.
- It requires plenty of space.
- Branches may be damaged by severe weather.
Black Walnut
Black walnut is a magnificent tree when given enough space. It can become very large and provides valuable timber, shade, and habitat. However, it can be challenging in a typical residential garden.
One major concern is juglone, a naturally occurring compound produced by black walnut trees. Sensitive plants may struggle when grown close to the tree, making some types of gardening more difficult.
The tree also produces large nuts that can fall across lawns, patios, driveways, and walkways. These nuts can be messy and difficult to mow over.
Why think twice:
- It produces juglone that can affect some nearby plants.
- Large nuts create significant cleanup.
- The tree can become extremely large.
- Its extensive root system makes planting beneath it challenging.
Poplar
Poplars are often planted because they grow quickly. If your goal is rapid shade or screening, that fast growth may initially seem like a major advantage.
However, some poplar species and cultivars can develop weak wood and extensive root systems. Their roots may spread into areas where you do not want them, while aging branches can become vulnerable to breakage.
Some types are also susceptible to pests and diseases, which can shorten their useful landscape life.
Why think twice:
- Some varieties have weak or brittle wood.
- Roots can spread aggressively.
- Mature trees may require substantial space.
- Certain species are susceptible to pests and diseases.
Before planting a poplar, identify the exact species or cultivar rather than assuming all poplars behave the same way.
Eucalyptus
Eucalyptus trees can be attractive, fast-growing, and useful for providing shade or screening. They are particularly well adapted to certain climates, but some species can become enormous and are not suitable for small residential yards.
Large eucalyptus trees may shed branches, bark, and leaves, creating ongoing cleanup. Their root systems can also compete strongly for available moisture.
Because there are many eucalyptus species with very different characteristics, suitability depends heavily on the particular species and local environment.
Why think twice:
- Some species grow extremely large.
- Large branches can become a concern during severe weather.
- Fallen bark, leaves, and branches can increase maintenance.
- They can compete strongly for water.
If you are considering eucalyptus, choose a species specifically suited to your climate and available space rather than planting one simply because it grows quickly.
Mimosa Tree
Mimosa trees are known for their delicate-looking foliage and attractive pink, fluffy flowers. They can quickly create an ornamental effect, but their ability to spread is one reason homeowners should research them carefully.
Mimosa produces numerous seed pods, and in suitable environments, seedlings can appear throughout the garden and beyond. The tree also tends to have relatively weak wood and may not have the long lifespan homeowners expect from a major landscape tree.
Why think twice:
- It can spread readily through seeds.
- It may be invasive in certain regions.
- Wood can be relatively weak.
- Seed pods can add to garden cleanup.
Before planting mimosa, check whether it is considered invasive or problematic in your local area.
Tree-of-Heaven
Tree-of-heaven is a classic example of a tree that can look useful at first but become a serious landscape problem.
It grows rapidly and tolerates difficult conditions, which can make it seem like an easy tree to grow. Unfortunately, those same characteristics allow it to establish aggressively.
It can spread through both seeds and root shoots, making established trees difficult to control. In areas where it is invasive, it can displace native vegetation and interfere with natural ecosystems.
Why think twice:
- It is highly invasive in many regions.
- It spreads through both seeds and roots.
- Established trees can be difficult to remove.
- It can crowd out desirable vegetation.
- Crushed foliage can produce an unpleasant smell.
This is one tree where checking local invasive-species information before planting is especially important.
Russian Olive
Russian olive has attractive silvery foliage and is known for tolerating challenging conditions. Unfortunately, its toughness can also make it problematic outside its natural range.
In some regions, Russian olive has become invasive and can spread into natural habitats. Once established, it can form dense growth and compete with native plants for resources.
Why think twice:
- It is invasive in some regions.
- It can spread beyond the original planting area.
- Dense growth may crowd out native vegetation.
- Controlling established plants can be difficult.
If you are attracted to its silvery foliage, look for non-invasive alternatives that provide a similar visual effect in your region.
Mulberry
Mulberry trees can be useful for wildlife and may produce delicious fruit, but the fruit is also their biggest drawback in many residential landscapes.
When ripe berries fall onto patios, sidewalks, driveways, and outdoor furniture, they can stain surfaces and create a sticky mess. Fallen fruit may also attract insects and other animals.
Some mulberry varieties can also grow aggressively, developing substantial root systems and becoming larger than expected.
Why think twice:
- Fallen fruit can stain hard surfaces.
- Ripe fruit can attract insects and wildlife.
- Roots can become troublesome in confined spaces.
- Some varieties spread readily.
If you want a fruiting tree, consider how much fruit you actually want falling around the areas where your family spends time.
Lombardy Poplar
Lombardy poplar has a tall, narrow shape that can look perfect for creating privacy or adding vertical interest to a yard.
Unfortunately, the tree has several weaknesses that can make it a poor long-term choice. It tends to have a relatively short landscape life and can be susceptible to diseases and pests. As the tree ages, its branches may become increasingly vulnerable.
Its roots may also produce unwanted suckers, creating additional maintenance.
Why think twice:
- It can have a relatively short lifespan.
- Disease and pest problems can occur.
- Aging branches may become weak.
- Roots can produce unwanted suckers.
For screening, consider trees specifically selected for long-term health, mature size, and suitability to your local climate.
Camphor Tree
Camphor trees can provide dense evergreen foliage and substantial shade, making them attractive to homeowners looking for a large shade tree.
The problem is size. Depending on the species and growing conditions, camphor trees can become extremely large and may eventually overwhelm a residential landscape.
Their roots can compete with nearby plants, while fallen leaves and fruit can increase maintenance. In some regions, camphor trees are also considered invasive.
Why think twice:
- Some trees become extremely large.
- Dense roots can compete with surrounding vegetation.
- Fallen leaves and fruit can create additional cleanup.
- It is invasive in certain regions.
Always check the specific species and local recommendations before planting camphor.
What to Consider Before Planting Any Tree
Avoiding problematic trees does not mean you should avoid trees altogether. The key is choosing the right tree for the right location. Before purchasing a tree, consider these factors.
1. Mature Size
One of the most common landscaping mistakes is choosing a tree based on its nursery size rather than its mature dimensions.
A small tree in a container may eventually become 20, 40, or even 60 feet tall. Its canopy may also spread much farther than expected. Always research the mature height and width before planting.
2. Root Behavior
A tree’s roots are just as important as its branches. Research whether the species develops shallow, spreading, or aggressive roots. Avoid placing large trees too close to foundations, underground utilities, drainage systems, septic systems, or paved areas.
3. Growth Rate
Fast growth sounds appealing, but it is not always an advantage. Rapidly growing trees may have weaker wood, require more pruning, or have shorter useful lifespans. A slower-growing tree can sometimes be a much better long-term investment.
4. Mess and Maintenance
Think about what the tree will drop throughout the year. Fruit, nuts, seed pods, leaves, flowers, and small branches can all create cleanup. A tree planted over a driveway or patio may become especially frustrating if it produces heavy litter.
5. Invasive Potential
Always research whether a tree is considered invasive in your region. A tree that behaves well in one country or climate may spread aggressively somewhere else. Local invasive-species lists and advice from qualified horticultural professionals can help you make a better decision.
6. Climate and Soil
A beautiful tree is not necessarily a healthy tree if it is planted in unsuitable conditions.
Check the tree’s requirements for temperature, rainfall, drainage, soil type, sunlight, and moisture. Choosing a species adapted to your environment will usually result in a healthier and lower-maintenance landscape.
7. Distance From Structures
Think about the tree’s mature size before choosing its planting location. Keep large trees a safe distance from houses, fences, driveways, sidewalks, power lines, drainage systems, and other structures. A few extra feet of planning now can prevent expensive problems later.
My Final Thoughts
Planting a tree is a long-term decision. The right tree can become one of the best features of your yard, providing shade, beauty, privacy, and wildlife habitat for many years.
The wrong tree, however, can become a constant source of problems. When choosing your next tree, look beyond flowers and fast growth. Consider its mature size, roots, strength, maintenance needs, invasive potential, and suitability for your particular yard.
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